Free Traffic Legal Advice

There are two aspects here.

1. You blithely turn left into Meadvale road and park for several days running, not noticing the restriction signs, then whallop, you get a PCN, then several more in the post. The first PCN arrival alerts you to the restriction.

In cases like this, it is generally best when submitting reps to the council to state that you only became aware of the restriction when the first PCN dated <date> arrived in the post on <date>, but in between these dates four more PCNs were posted but only arrived after you received the first one and was alerted to the restriction.  You should say that you consider having to pay 5 PCNs is a grossly excessive penalty especially as you only became aware of the restriction 8 days later when the first PCN arrived. Ask that PCNs 2-5 be cancelled.

2. The obscured signage
This restriction has been in place since 2021, so I am a bit surprised you know nothing about it.
This winter GSV view shows the restriction signs, as there are no leaves on the tree, plus a rather misleading "new road layout" sign which is meaningless, it should have been a warning about the left turn.
https://maps.app.goo.gl/MMghQJgFGaeZQTXr6
Later in 2021, the signs are totally obscured by the tree foliage
https://maps.app.goo.gl/hobETQszfz6unz9f8
and
https://maps.app.goo.gl/JpCF2N3HCBRrGFRV9

I would say you have a pretty powerful case on sign obscuration. In fact, if one studies the signs of 2021, originally the restriction sign was placed behind the tree ! the later view shows it was moved forward, sometime between January and June 2021.

Videos:

AO0164318A:



AO01626420:



AO01653398:



AO01653456:



AO01682126:



For convenience, here are silentcal's photos of the signage:





I have requested the traffic order, but in the meantime here is a draft representation (I can't see any reason not to aim for a cancellation across the board):



You will need to submit representations five times, once for each PCN (but you can use the same text each time), via https://ealing.tarantoportal.com/ (don't forget to upload the two photos you've taken).

Make sure to keep a screenshot of the confirmation page.

What was the outcome. I know this may sound like a silly observation, but how did they identify it was your number plate for the PCN to be issued. Judging by the PCN and video evidence Ealing have provided. The number plate on the PCN cannot be established and so this fails its first evidence test.